TRANSMITTING DEVICE, COMMUNICATION SYSTEM, CONTROL CIRCUIT, AND PROGRAM

• Main Authors: FUKUI NORIYUKI, HASEGAWA FUMIDAI, OKAZAKI AKIHIRO, TAIRA AKINORI, IURA YUKI, UCHIDA SHIGERU
• Format: Patent
• Language: English; Japanese
• Published: 11.11.2021
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; MULTIPLEX COMMUNICATION; TRANSMISSION; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

To obtain a transmitting device that can prevent reduction in transmission efficiency and reduction in communication capacity.SOLUTION: A transmitting device 1 allocates layers to a terminal, and determines arrangement positions of a frequency domain and a time domain of a reference signal for each layer. In a plurality of first layers, for first reference signals arranged in second and third symbols of 0-th and first subcarriers and second and third symbols of sixth and seventh subcarriers, orthogonal codes orthogonal between layers of the plurality of first layers are multiplied. In a plurality of second layers different from the plurality of first layers, for second reference signals arranged in second and third symbols of second and third subcarriers and second and third symbols of eighth and ninth subcarriers, orthogonal codes orthogonal between layers of the plurality of second layers are multiplied. A sequence of the first reference signals and a sequence of the second reference signals are different from each other.SELECTED DRAWING: Figure 2 【課題】伝送効率の低下および通信容量の低下を抑制することができる送信装置を得ること。【解決手段】送信装置１は、端末にレイヤを割当て、レイヤごとに参照信号の周波数領域および時間領域の配置位置を決定し、第１の複数のレイヤで、０番目と１番目のサブキャリアそれぞれの２番目と３番目のシンボル、および６番目と７番目のサブキャリアそれぞれの２番目と３番目のシンボルに配置された第１の参照信号は、第１の複数のレイヤのレイヤ間で直交する直交符号がそれぞれ乗算され第１の複数のレイヤと異なる第２の複数のレイヤで、２番目と３番目のサブキャリアのそれぞれの２番目と３番目のシンボル、および８番目と９番目のサブキャリアのそれぞれの２番目と３番目のシンボルに配置された第２の参照信号は、第２の複数のレイヤのレイヤ間で直交する直交符号がそれぞれ乗算され第１の参照信号の系列と第２の参照信号の系列とが互いに異なる。【選択図】図２